/*
 * Copyright (c) 1999-2003, Carnegie Mellon University. All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 
 * 3. Products derived from the software may not be called "iVProg",
 *    nor may "iVProg" appear in their name, without prior written
 *    permission of Carnegie Mellon University.
 * 
 * 4. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes software developed by Carnegie Mellon University"
 */

package edu.cmu.cs.stage3.util.criterion;

import edu.cmu.cs.stage3.util.Criterion;

public class NotCriterion implements Criterion {
	protected Criterion m_criterion;

	public NotCriterion( Criterion criterion ) {
		m_criterion = criterion;
	}

	public boolean accept( Object o ) {
		if( m_criterion != null ) {
			return !m_criterion.accept( o );
		} else {
			return false;
		}
	}
}

